package bean;

import org.springframework.boot.CommandLineRunner;
import org.springframework.core.env.Environment;

import java.util.Objects;

@SuppressWarnings("unused")
public class CustomCommandLineRunner implements CommandLineRunner {

    Environment environment;
    public CustomCommandLineRunner(Environment environment) {
        this.environment=environment;
    }
    @Override
    public void run(String... args){
        System.out.println("利用Spring Boot自动装配的CommandLineRunner");
        System.out.println("生成一个随机字符串：".concat(Objects.requireNonNull(environment.getProperty("random."))));
    }
}
